Chilian mill.



LANE..

CHILIAN MILL.

APPLICATION FILED JAN. I4, 1914.

Patented Apr. 30, 1918.

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CLC. LANE.

V CHILIAN MILL. .APPLICATION FILED JAN. 14, 1914.

Patented Apr. 3o, 1918.

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CHARLES LANE, 0F LOS ANGELES, CALIFORNIA, ASSIGNOR TO LANE MILL &MACHIN- ERY C0.,v OF LOSANGELES, CALIFORNIA, A CORPORATION 0FCALIFORNIA.

CHILIAN MILL. V

To all whom @may concern:

citizen of the United States, residing-at Los Angeles, in the county ofLos Angeles and State of California, have inventedL certain new anduseful Improvements in Chilian Mills, of which the following is aspecilication.

This invention relates to that class of mills for crushing ores andrecovering precious metals therefrom known as Chilian mills of the typeshown in my Patent No. 1,082,960, dated Dec. 30, 1913.

An object of this 'invention is to provide a Chilian mill in which theframe for carrying the rollers of the large diameter required or suchmills can be constructed of sections that may be easily. packed overmountain trails and can with facility be assembled to producesubstantially a circular periphery, and which Jframe will have suli-`cient strength to withstand the great strains to which such a frame isliable, and to permit jacking up when necessary for replacing rollertires andthe like .without disassem bling the mill..

V An object of the invention is to provide a construction whereby themomentum of the weight tank' will be applied inthe most vdirect andforcible manner to the crushing rollers and to so construct suchappliance that it may be built in place and will ao'- oommodate therollers in the most convenient manner, at the same time makingprovisionv for centering the frame of the mill relative to the panwithout liability of cramping v 1 Another object ofthe invention is topr0- vide a Chilian mill with a central pivot for therframe which willpermit a slight tilting and a universal movement of the frame about thepivot so that-whenever the crush-V ing rollers pass overlarge pieces ofrock or the like the mill will accommodate itself thereto, thuspreventing lateral strainsfthat might otherwise occur upon the centerIshaft.

Still other objects of the invention are to provide a constructionotminimum height having great compactness and stability when Specicationof Letters Patent.

Patented Apr. 30, 1918.

Application led January 14, 1914. Serial No. 812,162.

fective means for indicating to the operator when the mill is beingoverfed.

The presentmill is adapted to be equipped with the roller-adjustingmeans shown in my said patent, but the application-ofvsuch means to themill will be understood without detail illustration.

y The invention may be carried out in various forms.

The important features, capabilities and advantages of the inventionwill become apparent from the `subjoined detail descrip* ion.

The accompanying drawings illustrate the invention. i

Figure lis a top plan of a mill showing being broken away in part forclearness of illustration. 4

Fig. 2 is a sectional elevation of the same on line azz-m2, Fig. l.

Fig. 3 is an enlarged fragmental broken detail illustrating one form ofconstruction of the collars.

Fig. 4 is a reduced perspective of the mill, omitting the hopper. y

Fig. 5 is a reduced perspective of the mill one embodiment oi theinvention, the same f `as shown in Fig. 4, but viewed from the oppositeside and at a lower level than in In the embodiment' shown a monolithicbase l formed of reinforced concrete has an upwardly extending portion 2at one end to form bearings for Va pulley Srvwhich may be connected-*tobe driven by any suitable source ofpower, and which by means of suitablegearing connections 4 is adapted to drive a spur pinion 5. Most of theremaining part of the base '1 cooperates with and forms a part of themill proper having two annular concentric walls 6 and 7 extendingupwardly, inclined from one another, and forming an annular crushingchannel or pan in which is positioned a track composed of sections 8that are suitably anchoredl in ksuch a manner in a sectional anchoringplate 9 formed in the concrete base 1 as to leave lio an. outer annulardepression 10 adjacent to the wall V'ZIthis depression being adaptedl tocontain mercury as is customary in the practice. .The contents of theannular depression 10 maybe drawn off when vdesired by a suitableoutlet-r11: discharging intova receptacle 12 vrformed in the base 1outside of the annular wall 7. (See Fig; l.)

Qne side of the outerannular wall. 7 is Y cut away almost down tothemercury bath;

saidbase, atthe recessfthu'sformed bei-ng kprovided with suitable,stanchions 13', -ctwo bei-ng shown in the present instance, whichco'pe'r'ate with the edges of theV main portion of the wall 7 toVsupport wally sections V15-between them. On top of these-wall seo-'tionsl arefsecured pans 1-6, one for each wall section 15, and aboveeach of tliesezpans a screen i'slprovided As the ore which is l c flowand pass through the screens and overtlie pans'l' fromA which it canbejcon'veyed crushed in 'the crushing pan between the walls "6 and 7 ispassed around tothe recess in the Wall 7 ,the pulp which rises aboveythe upperedlges of the screen17 willfoverl tov anylsuitable sluice oronto amalgamatin-g Y, plates. YThe screens willfprevent largev and lightsubstances suchas floating wood or the like, from passing onf` to .thepans 16. In

some instances the pa-nswill be provided y with amalgamating plates andin some cases larging a portion o its bore.

. is: provided "with 'a balfl 22 fixed to its'V upper end-,1y Vand shownasof slightly largerj diamk Y eter than said pin.'V centrally-raisedgirder *plate 28:, Vwlii'clris normally horizontally .n 'disposedyisprovided, having afcentralopen;

ying which: i'so` less diameter thai'r the diameter ofthe-ball 22,but ofgreater diameterthan theV pin 20,rv which exten-ds V'downward thrugh theopening 24, on the rim of i which itsball-L 22"rests being secure'dfagainst `dis'placen'rent 'byl means of a' capplate 25 heldin place'bysui-table'meansasxbolts, and havingy a central concaved depressionfwhich its'love'r the ball 22, forming with the plate l asocket fortheballl A universal joint is thus formed permitting universalmovement'o'f the plates relative to the pin.` The cap plate' '25 has a"central oill'fhole 225 tllirou'ghj which lubrication of theV pin'-V iseeoted.` The pin works freely upanddown in {thebore of the socketimember19' and holds in true central position the -girder plate 23 which formsa central connection rollers 27 to be mounted between each two .layersof separately constructed arched sec- 7 for radial frame members such asthe girders 2G that extend radially outward; there being in the presentinstance six such girdersV .spaced apart symmetrically to permitsuccessive gi'rders. The girders 2G are substantially of equal length sothat a practically circular rim 28 may be secured 1.o their outer ends.The rim 28 is built up of two tions 29 overlapping at their ends, andsecured together by means of bolts 30, or :the like. The outer peripheryof the circular rim 28 vis turned down so that spur tootl-iedsegmcnts32, placed end to en d, may be boltedV or otherwise secured to suchperiphery to form a kcontinuous annular toothed periphery adapted tomesh with the spur pinion. In this way the diiliculty Yof forming atrue-circular rim of great diameter with steel or other metal is avoid--edY and yet a knocledowntoothed rim ot great strength is provided.

vSecured by means of bolts vor the like on the upper edges of thegirders26 inwardly of the circular rim 28 are two correspondingconcentric polygonal crown' collars 33, '33" which are twelve-sidedl inthe present instance and which have adjacent parallel sifdesg, alternateparallel sides thereof being positioned between each; two adjacentgirders 2'6.V In Figs. 1, 2: and 8, each side of these collars iscomposed' of wooden planl'rs 'cut' to diderent lengths to form,strrngers and fillers 35 of which there are .six layers, one on top ofanother, the stringere of. each side being in the same' horizontalplanes with fillers of adjacent sides and iuterlocked at their ends withthe stringers ot said adjacent sides; the fillers and stringers of eachside and the,interlocke'dl ends of the string-ers ofY adjacent sidcsbeing suitably bolted together. The ends of the 'planks of each layerare. mitered to gire shape tothe collars 'and to iit thel ends of 3.1.0

thellersto the edges oi'- the stringers. Each of the `strin'gers of onecollar is parallel with a filler of the other collar, and eachy pair' ofparallel l :members thus formed constitute radially alined sides' of thecollar; and' the 115 bearings for the rollers are attached thereto. Therollers 27 are arranged respectively between adjacent girders, and onsupporting` shafts jtliaft are mounted respectively inbearings 37, 37,secured toA the lower face 320 of thosey alternate pairs of acontparallel vsides of the collars`33, 33 that are positioned betweenadjacent girders26; The parallel sides are; provided with series of boitholes a, in the present instance shown as extending throughV tl'ie'lowerfour layers of planks only; there being small supporting blocks 38Yspaced apart from one another and -strips 38 provided instead of 'planksfor the fifth Vlayer from the bottom to support the top v blocks areprovided topermit nuts to be inserted to receive the bolts b when;screwed thereinto through the bolt holesc. Y This series of bolt holesis provided so that the position of the bearings may be changed toobtain different crushing eects.

` A series of distributing pipes 39 is previded, each pipe being securedto a girder` 26 and having its lower enddischarging Ain front of aroller'Q'T and having its upper end communicating with and receiving Ysuitably reduced ore from a'common hopper 40, A suitable launder 4l isprovidedl to convey the ore to` be crushed tothe hopper 40 from which itis conveyed by means of the distributing. pipes 39 lto the'crushingrollers 27. Ifore is fedA too rapidly the rollers are raised therebyand-provision is made to notify the attendant of 'such overfeeding. Tothis end there is 'mounted on the inner face of the circular rim 28 abell 42 having its edge above the upper surface of said rim. A signalmember comprising a rod 43, fixed to the upwardly extending' portion 2,and a head 44 secured at its outer end is positioned at a level justabove that at which the bell 42 is designed to revolve so as to bestruck by the bell to sound an alarm when thecircular rim 28 to whichthe bell is fixed rises above a predetermined level, thus to warn theattendant that the ore is being fed too fast.

The weight tank to give the rollers the required crushing weight hav-ingan annu-lar chamber 45 to receive suitable weights 46, and a centralopening 47 through which the y hopper 40 is permitted to protrude, maybe of any suitable construction and is supported by and may be suitablyfastened to the annular collars 33 and 33 if desired.

lt is understood that the number of rollers may be greater or less thanshown in the drawing, and that the parallel sections be tween which saidrollers are mounted will correspond in number to the number of rollersprovided. ln theform shown, there are six rollers andA the collars aretwelve sided; while with three rollers the collars would be six sided,four rollers eight sided, and so on.

Obviously, various changes and modifications in the details ofconstruction may be made without departing from the general scope ofthis invention.

' l. In a Chilian mill, the combination of a monolithic base having twoannular concentric walls extending upwardly and outwardly and forming acrushing channel, with sectional anchoring plates embedded in the base,crushing track sections 4so formed and attached to thel anchoringsections as to leave an outer annular depression between the crushingtrack and the outer wall,vand means leading from'theebottomof thedepression to the `outside of the outer wall vfor draining saiddepression.

2. In a Chilian'mill, a monolithic base having a crushing channel, acrushing track anchored inV the channel, .there being a drained annulardepression outside of the track and between the track and the outerwall,'overliow pans secured on top of the outer wall and leading to theoutside thereof; and a screen above eaclnof the overflow pans.

3,111 a Chilian mill, a. monolithic base providedwith an annularcrushing pan and a central support having a vertical socket' therein, anormally horizontal girder plate having 4a central opening therein; apin adapted to slide freely up and do-wn Vin the socket and extendingthrough and loosely fitting inthe opening; a ball fixed to the pin atfthe upper end thereof and being of a larger diameter than the pin andthe opening in the girder plate; a cap plate secured to the girder plateand provided with a central part that lits the ball and together withthe girder plate constitutes a socket that allows a free rotary movementin all directions within the socket for the ball; girders extendingradially from the girder plate; a

plurality of bearings arranged in peripheral and transverse relation toand above the crushing pan at the inner side thereof; bearings at theouter side of the crushing pan and respectively alined with thefirst-named bearings; shafts respectively mounted to rotate in thealined bearings ,L crushing rollers respectively secured to the shaftsand adapt-V ed to travel in the annular crushing pan with the ball astheir common pivot so as to allow the girder plate to rotate in or outofhorizontal position; .and means to cause rotation of the girder platewithout inten fering with the free movement of the ball and the pin.

4. In a Chilian mill having a rotatable frame the combination withcrushing rollers carrying said rotatable frame, of means for indicatingto the operator when said Chilian mill is overfed, said means comprisinga bell fixed to said rotatable frame, a flexible rod lixed to astationary support, and aknocker at the end of said rod in position toengage said bell whenever said rotatable frame is raised a predetermineddistance due to over feeding. v Y Y 5. ln a Chilian mill having a weighttank,

the `combination with a stationary guide- .Y

member, of a rotatable frame having a central plate, girders secured tosaid central plate and extending radially therefrom, concentric collarssecured -to said girders on which said weight tank is positioned, a pin,and a ball xed to said pin and being movably anchored in said socket,said guidemember being provided with a bore to receive said pin toprevent 'lateral movement .y of said rotatable.frame but to permittilting of' said frame .by mesi-ns 'of smid bail and socket"connection7seidV pin being freer to rise out of said guidemember with saidframewhenever the' rollers are r-"eisedl by. the' ma,- teriiil over whichthey passfr t 6. A universally movable .guide-member for the rotatableframeof e Ghilirtn mill `comprising e 4stationery guide-member, a 4platehaving. e'vraisecl portion and.l an opening in the center of said raisedportion,` said fplaitebeing, secured tol the center of said ro- Y. Ytetafble'fmme, :e pin7 ball of greater diamepin beingadeptedtopassthrough said openter than said opening" iXeol` to seid' vpinyseid ing;andl a ,second7 plete having au conca-ved recess g, said secondV pltebeingl fixedv to said i Y {tirst-mentionedV plete and ecleptedfto anchor'said vball leetvveenI said fconn'zaved-y recess and tlifepinv of saidinst-mentioned plate",v

guide-member lievi-ng. e bore to receive said pin whereby to preventlateral movement of Suid rotatable frame' but to permit tilting :md upland' down movement of said frame by means of sii-icl bell and socket andpin connection.

7. In a Cliilfian mill having a rotatable frame, the combination withcrushing rollers carrying said frame, of signal means carried by`sii-idV freine, and stationary means above the normal= level of Saidsignal means to Contact With the signal mea-ns and give :t signal whenvthe frame is raised4 above :u de- `termined level.

In testimony whereof, I have hereunto set my hand at Los Angeles,California, this 8th dey' of J anuary, 1914.-

CHARLES C. LANE. Inpresence yoat-- JAMES R. ToWNsENo, GU-s'lAv DREWS.

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